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firefox.exe

Lacuf

InstallFlash (Fried Cookie Ltd)

The Fried Cookie installer utilizes the InstallCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application firefox.exe, “Lacuf Setup ” by InstallFlash (Fried Cookie) has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the installCore installer. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The installer is marketed through download protals and search ads as the free Mozilla Firefox web browser but will also install additional software offers which include adware, PUPs and browser toolbars.
Publisher:
Robu   (signed by InstallFlash (Fried Cookie Ltd))

Product:
Lacuf

Description:
Lacuf Setup

Version:
3.8.4.3

MD5:
06ab200ae41e6f46ad94e4dc0afc69c2

SHA-1:
98bec3d4b44777dc81b18d44e286d5c583dea150

SHA-256:
f8c77b0a6cf2c7708f2eb325113ea2829ecdcb6db207d1ea68ddf4965acd390d

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
11/1/2024 8:34:30 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.InstallCore.FC.Installer (M)
16.3.5.15

File size:
1.1 MB (1,120,352 bytes)

Product version:
2.4.5

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\firefox.exe

Digital Signature
Signed by:
InstallFlash (Fried Cookie Ltd)

Authority:
GlobalSign nv-sa

Valid from:
12/17/2015 2:18:16 PM

Valid to:
6/2/2016 5:24:43 PM

Subject:
CN=InstallFlash (Fried Cookie Ltd), O=InstallFlash (Fried Cookie Ltd), L=Tel Aviv, C=IL

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
1121ACE394F39EFB26D753579A412465CB79

File PE Metadata
Compilation timestamp:
6/20/1992 12:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:X5pydzYpRU332AMsh7+m+JeFxOAgJFiG4C3/YuFA8TPu5RY5:XDazYmmEA+xOtFiG4C3DFyRY5

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

The file firefox.exe has been seen being distributed by the following 3 URLs.

http://www.bundlerepositorybundle.com/c?x=0LpQhK7AORe1DZzRUcsCMA8VNobm7AX8nGXcdRjHjy8=&c=Ugez0QVnk2QZpQt1T/KPdL1/.../CyQrr7xC8&downloadAs=Firefox.exe

http://www.tagfilescity.com/c?x=/lsUALOphW5ud18M9J3lkbUQ/w9Rw8TmYj2X1Yvupvg=&c=LgTYkvQiIf/.../2xn7meJHRa7PBehfMsvciL4D5Ni1RRy3Pd21yBeFh6p0CW5YQIsYt4UjXkJ4iHKYTinJjDKq U&downloadAs=Firefox.exe

http://www.bundleworlddl.com/c?x=P167xYSTYkdx GSmwBlasTKw6ove1bG /39mXerWzuA=&c=4 ec8RXDZZX9TnBDsa ssTackuNY2sm1ZEL9jMaHdLE4A4ycYqfC77O1g9k7dsTn6KN4UnoHuuuHTWya/tffZ3P WxbVHQ13/.../2rBerDrEzI&downloadAs=Firefox.exe

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